Charles a



N, PETERS, PHOTO-LITHOGRAPHER. WASHINGTON. D C,

, meer sans strat @Mire LamPatmrNo.104,322, ma .me 14, 1ste.

IMPROVEMENT IN OILERS l:FOR LCOSE PULLEYS.

The Schedule referred to in these Letters Patent and making part of the same.

To' all whom it may concer/i -Be it known that I, CHARLES A. KING, of Springel'd, in the county of Hampden and State of Massachusetts, have invented a new and useful Improved O iler for Loose -Pulleys; and I do hereby declare that the followiugis a full, clear, and exact description thereof, reference being had to accompanying drawing making a partV of this specilication, Aand to the letters of reference marked thereon, in which- Figure l'is a side view of a pulley, made withfniy invention applied;

Figure 2 is a side view of the same, with the cover of the oil-chamber remove the chamber; and

' Figure 3 is a vertical section of the salue, through line B C ot'g. 1.

My invention relates to aI device for lubricating the bearing of a loose pulley, and is an improvement upon the device shown iu Letters-Patent No. 95,912, grautedto me, and dated October 19, 1869; andl M v invention consists in the construction and arraugement of anaunular chamber and pulley, with a regulating supply-duct, and au oiling-duct and its chamber, whereby any desired quant-ity of oil may be drawn from the annularscuamber, which is filled, or partially filled with oil, through the said ducts, and delivered to the bearingof the pulley; and after the device'has been onceregulated to'deliver any particular or desired quantity of oil to the bearing, it will be self-operating, and continue to lubrioate the bearing to the same degree, daily.

That others skilled in the art may be able to make and use my invention, I will proceed to describe its construction and the mode of its operation.

In the drawing- M d represents the main part of the pulley, which connects the hub b with the rim e', and upon this part d is cast the annular rim e.

A protuberance, f, may be made upon the main part d, extending wholly or partially from the rim e to the hub b.

This protuberance is designed to furnish the necessarybody or stock through which to make tbe'oiling4` duct o', extending from the rim e of the annular chamber, or from a point near said rim, down through the hub b,- and may be made by drilling through from the outside ot' the pulley, and afterward plugging up the outer end ofthe hole, at the rim e of the annular chamber.

The duct o may be' made parallel to the' axis of the shaft, or Ato the axis of the hub b, or it may be made at any desired angle therewith.

' I prefer the former, as it is then only necessary `to drill through the part f, from the annular chamber'to the duct o. Y

d, showing the interior of y l A threaded hole is made through the rim e ot the annular` chamber, and extending to the inner side of the duct o, and ascrew, i, fitted therein, so that, when the said screw is turned in, the lower or inner end oi' the screw fitting against its seat, all communication from the annular chamber l (iig. 3) to the ductl 'o' is cut ofi.

The cover a ofthe annular chamber-Z may be made of tin, brass, or other suitable metal, and, if desirable,

and the metal is sufficiently thick, a screw-thread may be out upon the periphery of the disk or cover, and a corresponding female screw-thread cut upon thc interior of the annular chamber, and the cover may then be screwed in tightly, or it may be soldered in tightly, taking care that there shall be no leakage.

A threaded hole may be made in the cover a, and

a threaded knob, c, tted therein, and a small hole may also be made in the said cover a, into which may be soldered a glass,"a'.

The operation of my invention is as follows:

The knob c may be turned out, and the annular chamber filled with `oil, and, if filled nearly full, the oil may be seen, through the glass a. rI he uut or knob c may then be turned in tightly, and the screw i may then be turned in, so that the space between the inner eudof the said screw and its seat shall be very small. Then the pulley is set in rapid motion, the oil in the annular chamber is caused, by the centrifugal force, to

assume van annular position in the chamber, and a small quantity of the oil-is forced through the duct o beneath the end ot' the screw i, and is caused, by the centrifugal force, to occupy a position iu the outer end of theduct o, filling the chamber h, and the oil will thus remain iu about the same position during the rapid revolution of the pulley. When the pulley revolves suiiiciently slow to cause the centrifugal force' to cease to operate in throwing the oil away ii'om the shaft, the oil which has been iu the chamber' h, at the outer end ofthe duct o', will'pass down the duct o" to the shaft, thus' giving the bearing of the pulley the desired amount otlubricatiou. 1t' too much oil should be forced through the duct o into the duct o', a less quantity may be used, by turning the screwt' in a little, said screw operating as a valve to regulate the flow ot' oil through the duct o.

-A small wire screen or strainer is placed over the mouth of the duct o, and soldered, o1' otherwise prop erly secured thereto, as shown at f, to prevent any particles of dirt from passing into the duct o', and keep the oil, as it is being applied tothe bearing, al- .ways as clean as possible. v

By this device, all the oil that is admitted into the duct o may be used up, and none but new, fresh oil is applied to the shaft, instead of using the same oil over and over again, which, in a short time, becomes gummy and discolored, as is the case in some of the devices now in use.

I am aware that a self-oiling pulley, having the oiling-duct o' therein, has been made before, as shown in the before-mentioned Letters Patent No. 95,912, grantedlo me; but never, to. my knowledge, has al regulating-screw been used, in' connection with the small communicating-duct', o, for the purpose of regulating the supply of oil to the du'ct o' and chamber h.

Having thus described my invention, What'. I' claim as new, and desire t0 secure by Letters Patent, is, as an improvement upon the device showgln said Letters Patent; No. 95,912-- Witnesses:

' T. A. CURTIS,

C. E. BncKLANn. 

